Self-cleaning type drill bit and using method

Abstract

The invention is suitable for the technical field of drilling tools, and provides a self-cleaning type drill bit and a using method. A retainer is rotationally arranged on the peripheral side surface of the connecting shaft; the protective part is in sliding fit with the retainer; a stepped guide part consistent with the pagoda drill body in structure is arranged in the fixed seat in a sliding manner; a lifting plate is slidably arranged on the inner wall of the storage box; a first cleaning part matched with the conical spiral discharge groove and the conical spiral guide groove is arranged in the lifting plate in a sliding manner; a second cleaning part matched with the pagoda drill body is slidably arranged on the inner wall of the storage box in a penetrating mode, and the pagoda drill body is controlled to slowly rotate forwards and backwards, the first cleaning part is driven to ascend and descend through guiding of a conical spiral discharging groove and a conical spiral guiding groove for the first cleaning part, and the pagoda drill body is cleaned. And the cleaning sleeve is driven to clean dust and chippings in the conical spiral discharging groove, and the cleaning efficiency and effect of the pagoda drill body are improved.

Description

Technical Field

[0001] The present invention relates to the technical field of drilling tools, and more specifically, it relates to a self-cleaning drill bit and a usage method thereof. Background Art

[0002] A drill bit is a commonly used tool in daily life and is mainly used in various industries such as mechanical manufacturing. There are many types of drill bits. Among them, the stepped drill bit, also known as the stepped drill, integrates multiple diameters. Starting from the front end, the diameter increases sequentially. One drill bit can replace multiple drill bits and can be used to process holes of different diameters according to needs, which is beneficial to improving production efficiency and meeting the requirements of modern advanced processing equipment.

[0003] In the prior art, most of the dust and debris remaining on the conical spiral discharge groove and its peripheral side of the stepped drill are cleaned manually. The cleaning effect is average, which reduces the cleaning efficiency of the stepped drill. At the same time, the existing stepped drill lacks a dust cleaning structure and cannot effectively remove dust during the drilling operation, easily causing dust pollution in the working environment. Summary of the Invention

[0004] Aiming at the deficiencies of the prior art, the purpose of the present invention is to provide a self-cleaning drill bit and a usage method thereof. By inversely rotating and arranging the stepped guiding part on the fixed seat, controlling the stepped drill bit body to rotate slowly forward and backward, and guiding the first cleaning part through the conical spiral discharge groove and the conical spiral guiding groove, the first cleaning part is driven to lift, thereby driving the cleaning sleeve to clean the dust and debris in the conical spiral discharge groove, replacing the manual cleaning method, and improving the cleaning efficiency and effect of the stepped drill bit body.

[0005] To achieve the above purpose, the present invention provides the following technical solutions: A self-cleaning drill bit includes a stepped drill bit body; a connecting shaft is fixedly installed at the top of the stepped drill bit body; a cage is rotatably arranged on the peripheral side of the connecting shaft; it further includes a protection part slidably matched with the cage; the protection part includes a protection cylinder and a storage box that are communicated with each other; a fixed seat is slidably arranged on the inner bottom surface of the storage box; a stepped guiding part having the same structure as the stepped drill bit body is slidably arranged inside the fixed seat; conical spiral discharge grooves and conical spiral guiding grooves are respectively formed on the peripheral sides of the stepped drill bit body and the stepped guiding part; a lifting plate is slidably arranged on the inner wall of the storage box; a first cleaning part adapted to the conical spiral discharge groove and the conical spiral guiding groove is slidably arranged inside the lifting plate; a second cleaning part adapted to the stepped drill bit body is slidably penetrated through the inner wall of the protection cylinder.

[0006] The present invention is further configured such that: an outer annular groove is formed on the circumferential side surface of the connecting shaft; the cage includes a retaining ring that is rotationally engaged with the outer annular groove; symmetrically fixed to the circumferential side surface of the retaining ring are L-shaped plates; symmetrically fixed to the outer circumferential side surface of the protective cylinder are guide sleeves that are slidably engaged with the corresponding L-shaped plates; and a support spring is fixedly connected between the inner bottom surface of the guide sleeve and the bottom of the L-shaped plate.

[0007] The present invention is further configured such that: a sleeve that is inserted and engaged with the connecting shaft is fixedly provided at the top of the stepped drill body; a flange is fixedly provided on the circumferential side surface of the connecting shaft; the flange is fixedly installed at the top of the sleeve through fastening bolts; a hexagonal column that is snap-fitted with the output end of an external electric drill is fixedly provided at the top of the connecting shaft; the output end of the external electric drill is adapted with a magnetic hexagonal sleeve that is snap-fitted with the hexagonal column; a collection box is disposed through and communicated on the circumferential side surface of the protective cylinder near its bottom; one end of the collection box is open, and an inclined plate is fixedly provided on its inner bottom surface; a discharge pipe is disposed through and communicated on the inner bottom surface of the collection box; a sealing cover is screwed to the bottom of the discharge pipe; the other end of the collection box is communicated with a negative pressure pipe; and a filter screen is disposed inside the negative pressure pipe.

[0008] The present invention is further configured such that: a rotating shaft is fixedly provided at the bottom of the stepped guiding portion; an annular rail is fixedly provided on the circumferential side surface of the rotating shaft; a shaft hole that is rotationally engaged with the rotating shaft is formed inside the fixed seat; an inner annular groove that is rotationally engaged with the annular rail is formed on the inner wall of the shaft hole; and marking plates are fixedly provided on the circumferential side surfaces of both the connecting shaft and the stepped guiding portion.

[0009] The present invention is further configured such that: sliding rails are symmetrically and fixedly provided on both sides of the inner wall of the storage box; sliding grooves that are slidably engaged with the corresponding sliding rails are symmetrically formed on the opposite side surfaces of the fixed seat; an iron block is fixedly provided on the side surface of the fixed seat; a magnet is fixedly provided on the inner wall of the storage box; insertion holes are formed on the inner wall of the sliding groove; insertion rods that are inserted and engaged with the insertion holes are symmetrically and slidably disposed through both sides of the inner wall of the storage box; a stopper is fixedly provided at the end of the insertion rod; and a return spring that is sleeved on the corresponding insertion rod is fixedly connected between the stopper and the side surface of the storage box.

[0010] The present invention is further configured such that: a lifting groove that is communicated with the storage box is formed on the circumferential side surface of the protective cylinder; limiting grooves are symmetrically formed on both sides of the inner wall of the lifting groove; the lifting plate is slidably engaged with the lifting groove; limiting rails that are slidably engaged with the limiting grooves are symmetrically and fixedly provided on the opposite side surfaces of the lifting plate; a sliding hole is formed on the side surface of the lifting plate; and a guiding groove is formed on the inner wall of the sliding hole.

[0011] The present invention is further configured as follows: the first cleaning part includes a sliding rod that slides with the sliding hole; a guide rail that slides with the guide groove is fixed to the side surface of the sliding rod; a first ball head that is compatible with the conical spiral guide groove is fixed to one end of the sliding rod; a connecting spring that is sleeved on the sliding rod is fixedly connected between the first ball head and the side surface of the lifting plate; a second ball head is fixed to the other end of the sliding rod; a cleaning sleeve is sleeved on the second ball head; the cleaning sleeve sleeved on the second ball head is compatible with the conical spiral discharge groove.

[0012] The present invention is further configured as follows: a U-shaped seat is fixed on the circumferential side surface of the protective tube; guide holes are symmetrically provided on the circumferential side surface of the protective tube on both sides of the U-shaped seat; the second cleaning part includes a step-shaped plate adapted to the body of the pagoda drill; a step-shaped cleaning sponge block is bonded to the side surface of the step-shaped plate; a U-shaped plate slidingly matched with the two guide holes is fixed on the side surface of the step-shaped plate; screw holes are provided on the side surface of the U-shaped plate; a screw rod rotatably matched with the screw hole thread is rotatably provided on the side surface of the U-shaped seat; an extension plate is fixed on the top of the step-shaped plate; positioning rods are symmetrically fixed to the extension plate; a positioning hole plug-matched with the positioning rod is provided on the side surface of the L-shaped plate.

[0013] A method for using a self-cleaning drill bit comprises the following steps: T1. In the initial state, the positioning rod is separated from the positioning hole, and the stepped cleaning sponge block is separated from the outer wall of the pagoda drill body; the insertion rod is separated from the insertion hole, and the magnet attracts the iron block, so that the fixed seat drives the stepped guide part to slide away from the pagoda drill body, and under the elastic reset force of the connecting spring, the sliding rod is driven to slide away from the pagoda drill body, so that the cleaning sleeve is separated from the conical spiral discharge groove; the supporting spring is in a normal state, and the pagoda drill body is stored in the protective tube; T2. In the drilling state, insert the magnetic hexagonal sleeve at the output end of the external electric drill into the hexagonal column, place the protective tube flat on the surface of the plate to be drilled, control and start the external electric drill to drive the connecting shaft and the pagoda drill body to rotate synchronously, and at the same time, press the connecting shaft downward to make the pagoda drill body rotate and descend at the same time, and the support spring is compressed to complete the drilling. During the drilling process, start the external exhaust fan to extract the air inside the collection box to form a negative pressure, so as to suck the debris generated during the drilling process into the collection box; T3. After drilling, the pagoda drill body is stored in the protective tube to complete the reset. The fixed seat is pushed to drive the cleaning sleeve at the end of the first cleaning part to be inserted into the conical spiral discharge groove, and then the fixed seat is fixed; the screw is rotated to drive the stepped cleaning sponge block on the second cleaning part to slide against the outer peripheral side of the pagoda drill body. At this time, the positioning rod is inserted into the positioning hole to complete the preparation work before cleaning; T4. Control the external electric drill to drive the pagoda drill body to rotate slowly forward and backward. The dust and debris on the peripheral side of the pagoda drill body are cleaned off by the stepped cleaning sponge block. At the same time, through the guiding of the conical spiral discharge groove and the conical spiral guiding groove to the first cleaning part, the first cleaning part makes a reciprocating lifting motion, so that the cleaning sleeve cleans the dust and debris inside the conical spiral discharge groove.

[0014] The advantages of the present invention are as follows: In the present invention, by inversely rotating and arranging the stepped guiding part on the fixed seat, controlling the pagoda drill body to rotate slowly forward and backward, and guiding the first cleaning part through the conical spiral discharge groove and the conical spiral guiding groove to drive the first cleaning part to lift, thereby driving the cleaning sleeve to clean the dust and debris in the conical spiral discharge groove, replacing the manual cleaning method, and improving the cleaning efficiency and effect of the pagoda drill body.

[0015] In the present invention, by controlling the second cleaning part to move towards the pagoda drill body, the stepped cleaning sponge block abuts against the peripheral side of the pagoda drill body. At this time, the positioning rod is inserted into the corresponding positioning hole, so that the pagoda drill body can only rotate but not lift during the cleaning process, ensuring the stability of the pagoda drill body during the cleaning process. The stepped cleaning sponge block cleans the dust and debris on the peripheral side of the slowly rotating pagoda drill body, further improving the cleaning efficiency and effect of the pagoda drill body.

[0016] During the drilling process of the present invention, start the external exhaust fan to suck out the air inside the collection box to form a negative pressure, thereby sucking the dust and debris generated during the drilling process into the collection box, realizing the removal of dust and debris during the drilling operation, avoiding environmental dust pollution, and at the same time, reducing the difficulty of collecting the debris generated during the drilling process. Description of the Drawings

[0017] Figure 1 It is a schematic structural diagram of a self-cleaning drill bit of the present invention.

[0018] Figure 2 For the present invention Figure 1 Schematic structural diagram of the upward view angle.

[0019] Figure 3 For the present invention Figure 1 Partial cross-sectional view of the front view angle.

[0020] Figure 4 It is a schematic structural diagram of the assembly of the pagoda drill body and the connecting shaft of the present invention.

[0021] Figure 5 It is a schematic structural diagram of the protective part of the present invention.

[0022] Figure 6 It is a cross-sectional view of the protective part of the present invention.

[0023] Figure 7 This is a schematic structural view of the cage of the present invention.

[0024] Figure 8 This is a schematic structural view of the stepped guiding part of the present invention.

[0025] Figure 9 This is a schematic structural view of the first cleaning part of the present invention.

[0026] Figure 10 This is a schematic structural view of the second cleaning part of the present invention.

[0027] Figure 11 This is a schematic structural view of the fixed seat of the present invention.

[0028] Figure 12 This is a schematic structural view of the lifting plate of the present invention.

[0029] In the figure: 1. Arbor drill body; 2. Connecting shaft; 3. Cage; 4. Protection part; 5. Protection cylinder; 6. Storage box; 7. Fixed seat; 8. Stepped guiding part; 9. Conical spiral discharge groove; 10. Conical spiral guiding groove; 11. Lifting plate; 12. First cleaning part; 13. Second cleaning part; 14. Outer annular groove; 15. Retaining ring; 16. L-shaped plate; 17. Guide sleeve; 18. Support spring; 19. Sleeve; 20. Flange; 21. Hexagonal column; 22. Collection box; 23. Inclined plate; 24. Discharge pipe; 25. Negative pressure pipe; 26. Rotating shaft; 27. Annular rail; 28. Axial hole; 29. Inner annular groove; 30. Slide rail; 31. Chute; 32. Iron block; 33. Insertion hole; 34. Insertion rod; 35. Block; 36. Return spring; 37. Lifting groove; 38. Limiting groove; 39. Limiting rail; 40. Slide hole; 41. Guide groove; 42. Slide bar; 43. Guide rail; 44. First ball head; 45. Connecting spring; 46. Second ball head; 47. Cleaning sleeve; 48. U-shaped seat; 49. Guide hole; 50. Stepped plate; 51. Stepped cleaning sponge block; 52. U-shaped plate; 53. Screw hole; 54. Screw; 55. Extension plate; 56. Positioning rod; 57. Positioning hole; 58. Marking plate; 59. Magnet. Detailed implementation manners

[0030] It should be noted that, without conflict, the embodiments in the present application and the features in the embodiments may be combined with each other. The present invention will be described in detail below with reference to the drawings and in combination with the embodiments.

[0031] It should be pointed out that unless otherwise specified, all technical and scientific terms used in the present application have the same meanings as those commonly understood by those of ordinary skill in the technical field to which the present application belongs.

[0032] In the present invention, unless otherwise specified, the orientations such as "upper" and "lower" generally refer to the directions shown in the drawings, or to the vertical, perpendicular or gravitational directions; similarly, for the convenience of understanding and description, "left" and "right" generally refer to the left and right shown in the drawings; "inner" and "outer" refer to the inner and outer of the contour of each component itself, but the above orientation terms are not used to limit the present invention.

[0033] Example 1. Please refer to Figures 1-12 , the present invention provides the following technical solutions: A self-cleaning drill bit. Specifically, it includes a pagoda drill body 1; a connecting shaft 2 is fixedly installed at the top of the pagoda drill body 1; a cage 3 is rotatably arranged on the circumferential side of the connecting shaft 2; it further includes a protection part 4 slidably matched with the cage 3; the protection part 4 includes a protection cylinder 5 and a storage box 6 which are communicated with each other; a fixed seat 7 is slidably arranged on the inner bottom surface of the storage box 6; a stepped guide part 8 having the same structure as the pagoda drill body 1 is slidably arranged inside the fixed seat 7; conical spiral discharge grooves 9 and conical spiral guide grooves 10 are respectively formed on the circumferential sides of the pagoda drill body 1 and the stepped guide part 8; a lifting plate 11 is slidably arranged on the inner wall of the storage box 6; a first cleaning part 12 adapted to the conical spiral discharge groove 9 and the conical spiral guide groove 10 is slidably arranged inside the lifting plate 11; a second cleaning part 13 adapted to the pagoda drill body 1 is slidably arranged through the inner wall of the protection cylinder 5.

[0034] The working principle of this Example 1: By inversely rotating and arranging the stepped guide part 8 on the fixed seat 7, controlling the pagoda drill body 1 to rotate slowly forward and backward, guiding the first cleaning part 12 through the conical spiral discharge groove 9 and the conical spiral guide groove 10, driving the first cleaning part 12 to lift and lower, thereby driving the cleaning sleeve 47 to clean the dust and debris in the conical spiral discharge groove 9, replacing the manual cleaning method, and improving the cleaning efficiency and effect of the pagoda drill body 1.

[0035] The stepped cleaning sponge block 51 on the second cleaning part 13 cleans the dust and debris on the circumferential side of the slowly rotating pagoda drill body 1, further improving the cleaning efficiency and effect of the pagoda drill body 1.

[0036] Example 2. Please refer to Figures 1-12 , this Example 2 is improved as follows on the basis of Example 1. Specifically, an outer annular groove 14 is formed on the circumferential side of the connecting shaft 2; the cage 3 includes a retaining ring 15 rotatably matched with the outer annular groove 14; L-shaped plates 16 are symmetrically fixed on the circumferential side of the retaining ring 15; guide sleeves 17 slidably matched with the corresponding L-shaped plates 16 are symmetrically fixed on the outer circumferential side of the protection cylinder 5; a support spring 18 is fixedly connected between the inner bottom surface of the guide sleeve 17 and the bottom of the L-shaped plate 16.

[0037] A sleeve 19 that is plugged into the connecting shaft 2 is fixed on the top of the pagoda drill body 1; a flange 20 is fixed to the side of the connecting shaft 2; the flange 20 is fixed to the top of the sleeve 19 by fastening bolts; a hexagonal column 21 that is snap-fitted with the output end of the external electric drill is fixed on the top of the connecting shaft 2; the output end of the external electric drill is equipped with a magnetic hexagonal sleeve that is snap-fitted with the hexagonal column 21.

[0038] A collecting box 22 is provided on the side surface of the protective tube 5 near its bottom; one end of the collecting box 22 is opened, and an inclined plate 23 is fixed on its inner bottom surface; a discharge pipe 24 is provided on the inner bottom surface of the collecting box 22; a sealing cover is screwed on the bottom of the discharge pipe 24; a negative pressure pipe 25 is provided on the other end of the collecting box 22; a filter screen is provided inside the negative pressure pipe 25.

[0039] A rotating shaft 26 is fixed to the bottom of the stepped guide portion 8; a circular rail 27 is fixed to the side surface of the rotating shaft 26; an axial hole 28 is provided inside the fixed seat 7 to rotate with the rotating shaft 26; an inner circular groove 29 is provided on the inner wall of the axial hole 28 to rotate with the circular rail 27; marking plates 58 are fixed to the connecting shaft 2 and the side surfaces of the stepped guide portion 8.

[0040] Slide rails 30 are symmetrically fixed on both sides of the inner wall of the storage box 6; slide grooves 31 slidably matched with the corresponding slide rails 30 are symmetrically opened on the opposite sides of the fixed seat 7; an iron block 32 is fixed to the side of the fixed seat 7; a magnet 59 is fixed to the inner wall of the storage box 6; a socket 33 is opened on the inner wall of the slide groove 31; plug rods 34 plugged and matched with the socket 33 are symmetrically and slidably set on both sides of the inner wall of the storage box 6; a stopper 35 is fixed to the end of the plug rod 34; a return spring 36 mounted on the corresponding plug rod 34 is fixedly connected between the stopper 35 and the side of the storage box 6.

[0041] A lifting groove 37 connected to the storage box 6 is provided on the side surface of the protective tube 5; limiting grooves 38 are symmetrically provided on both sides of the inner wall of the lifting groove 37; the lifting plate 11 is slidably matched with the lifting groove 37; limiting rails 39 slidably matched with the limiting groove 38 are symmetrically fixed on the opposite sides of the lifting plate 11; a sliding hole 40 is provided on the side surface of the lifting plate 11; and a guide groove 41 is provided on the inner wall of the sliding hole 40.

[0042] The first cleaning part 12 includes a slide rod 42 that slides with the slide hole 40; a guide rail 43 that slides with the guide groove 41 is fixed to the side surface of the slide rod 42; a first ball head 44 that matches the conical spiral guide groove 10 is fixed to one end of the slide rod 42; a connecting spring 45 that is sleeved on the slide rod 42 is fixedly connected between the first ball head 44 and the side of the lifting plate 11; a second ball head 46 is fixed to the other end of the slide rod 42; a cleaning sleeve 47 is sleeved on the second ball head 46; the cleaning sleeve 47 sleeved on the second ball head 46 is compatible with the conical spiral discharge groove 9.

[0043] A U-shaped seat 48 is fixed on the side surface of the protective tube 5; guide holes 49 are symmetrically provided on the side surfaces of the U-shaped seat 48; the second cleaning part 13 includes a step-type plate 50 adapted to the pagoda drill body 1; a step-type cleaning sponge block 51 is bonded to the side surface of the step-type plate 50; a U-shaped plate 52 slidingly matched with the two guide holes 49 is fixed on the side surface of the step-type plate 50; a screw hole 53 is provided on the side surface of the U-shaped plate 52; a screw rod 54 rotatably matched with the threaded hole 53 is rotatably provided on the side surface of the U-shaped seat 48; an extension plate 55 is fixed on the top of the step-type plate 50; positioning rods 56 are symmetrically fixed to the extension plate 55; a positioning hole 57 plug-matched with the positioning rod 56 is provided on the side surface of the L-shaped plate 16.

[0044] Working principle of the second embodiment: In the initial state, the support spring 18 is in a normal state, the pagoda drill body 1 is stored in the protective tube 5, the magnet 59 attracts the iron block 32, and the stepped guide part 8 is away from the pagoda drill body 1. Under the elastic force of the connecting spring 45, the first ball head 44 is driven to abut against the conical spiral guide groove 10. At this time, the cleaning sleeve 47 on the second ball head 46 is separated from the conical spiral discharge groove 9, and the pagoda drill body 1 can rotate with the rotation of the connecting shaft 2. At the same time, the pagoda drill body 1 can be lifted and lowered with the lifting and lowering of the connecting shaft 2, so as to realize the drilling of the plate by the pagoda drill body 1. During the drilling process, the external exhaust fan is started to suck the dust and debris generated during the drilling process into the collection box 22. The dust and debris enter the collection box 22 along the inclined plate 23. The filter screen filters the dust and debris to avoid dust pollution in the environment. After the drilling is completed, the external exhaust fan is turned off. Under the action of gravity, most of the dust and debris fall into the collection box 22 and are collected, which reduces the difficulty of collecting the dust and debris generated during the drilling process.

[0045] After completing the drilling, take out the pagoda drill body 1 from the drill hole. When the pagoda drill body 1 is reset and stored inside the protective tube 5, the positioning rod 56 is coaxially arranged with the corresponding positioning hole 57. The rotating screw 54 drives the U-shaped plate 52 to move along the guide hole 49 toward the direction close to the pagoda drill body 1. During this process, the positioning rod 56 is inserted into the corresponding positioning hole 57 to ensure that during the cleaning of the pagoda drill body 1, the pagoda drill body 1 can only rotate but not move up and down, thereby ensuring the stability of the cleaning process of the pagoda drill body 1. When the stepped cleaning sponge block 51 abuts against the outer peripheral side of the pagoda drill body 1, the screw 54 is stopped to complete the installation of the second cleaning part 13 and the pagoda drill body 1.

[0046] Observe the marking plate 58 on the connecting shaft 2 and the stepped guide portion 8 to ensure that the two are pointing in the same direction, push the stepped guide portion 8 in the direction close to the pagoda drill body 1, and a hemispherical head is fixed to the other end of the plug rod 34. The hemispherical head at the end of the plug rod 34 is always placed on the inner wall of the slide groove 31 to slide, and the reset spring 36 is in a compressed state. When the socket 33 and the plug rod 34 are coaxial, the plug rod 34 is driven to be inserted into the socket 33 under the elastic force of the reset spring 36, so as to achieve fixed limit of the fixing seat 7 and the storage box 6. In this process, the stepped guide portion 8 squeezes the first cleaning portion 12 , the connecting spring 45 is compressed, and the cleaning sleeve 47 on the second ball head 46 is inserted into the conical spiral discharge groove 9. By controlling the pagoda drill body 1 to slowly and periodically reverse, the first cleaning part 12 is driven to slide back and forth along the lifting plate 11 while performing a lifting motion. When the pagoda drill body 1 rotates clockwise, the first cleaning part 12 is driven to rise, and it slides along the lifting plate 11 in the direction away from the pagoda drill body 1. When the pagoda drill body 1 rotates counterclockwise, the first cleaning part 12 is driven to descend, and it slides along the lifting plate 11 in the direction close to the pagoda drill body 1.

[0047] The dust and debris on the side of the pagoda drill body 1 are cleaned up by the stepped cleaning sponge block 51, and the cleaning sleeve 47 cleans the dust and debris inside the conical spiral discharge groove 9.

[0048] A method for using a self-cleaning drill bit comprises the following steps: T1. In the initial state, the positioning rod 56 is disengaged from the positioning hole 57, and the stepped cleaning sponge block 51 is disengaged from the outer wall of the pagoda drill body 1; the insertion rod 34 is disengaged from the insertion hole 33, and the magnet 59 attracts the iron block 32, so that the fixed seat 7 drives the stepped guide part 8 to slide in the direction away from the pagoda drill body 1, and under the elastic reset force of the connecting spring 45, the sliding rod 42 is driven to slide in the direction away from the pagoda drill body 1, so that the cleaning sleeve 47 is disengaged from the conical spiral discharge groove 9; the support spring 18 is in a normal state, and the pagoda drill body 1 is stored inside the protective tube 5.

[0049] T2. In the drilling state, by inserting the magnetic hexagonal sleeve at the output end of the external electric drill into the hexagonal column 21, the protective tube 5 is placed flat on the surface of the plate to be drilled, and the external electric drill is controlled to start to drive the connecting shaft 2 and the pagoda drill body 1 to rotate synchronously. At the same time, the connecting shaft 2 is pressed downward to make the pagoda drill body 1 rotate and descend at the same time, and the support spring 18 is compressed to complete the drilling. During the drilling process, the external exhaust fan is started to extract the air inside the collection box 22 to form a negative pressure, thereby sucking the debris generated during the drilling process into the collection box 22.

[0050] T3. After the drilling is completed, the pagoda drill body 1 is retracted into the protective cylinder 5 to complete the reset. The fixed seat 7 is pushed to drive the cleaning sleeve 47 at the end of its first cleaning part 12 to be inserted into the conical spiral discharge groove 9, and then the fixed seat 7 is fixed. The screw rod 54 is rotated to drive the stepped cleaning sponge block 51 on the second cleaning part 13 to slide and abut against the outer peripheral side of the pagoda drill body 1. At this time, the positioning rod 56 is inserted into the positioning hole 57 to complete the preparation work before cleaning.

[0051] T4. Control the external electric drill to drive the pagoda drill body 1 to rotate slowly in both forward and reverse directions. The dust and debris on the circumferential side of the pagoda drill body 1 are cleaned off by the stepped cleaning sponge block 51. At the same time, through the guiding of the conical spiral discharge groove 9 and the conical spiral guiding groove 10 to the first cleaning part 12, the first cleaning part 12 performs a reciprocating lifting motion, so that the cleaning sleeve 47 cleans the dust and debris inside the conical spiral discharge groove 9.

[0052] Obviously, the above-described embodiments are only a part of the embodiments of the present invention, rather than all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those of ordinary skill in the art without creative efforts shall fall within the protection scope of the present invention.

[0053] It should be noted that the terms used herein are only for describing specific embodiments, and are not intended to limit the exemplary embodiments according to the present application. As used herein, unless the context clearly indicates otherwise, the singular form is also intended to include the plural form. In addition, it should be understood that when the terms "comprising" and / or "including" are used in this specification, they indicate the presence of features, steps, operations, devices, components, and / or combinations thereof.

[0054] It should be noted that the terms "first", "second", etc. in the description, claims and drawings of the present application are used to distinguish similar objects, and are not necessarily used to describe a specific order or sequence. It should be understood that such data can be interchanged under appropriate circumstances, so that the embodiments of the present application described herein can be implemented in an order other than those illustrated or described herein.

[0055] The above are only the preferred embodiments of the present invention, and are not used to limit the present invention. For those skilled in the art, the present invention can have various changes and modifications. Any modification, equivalent replacement, improvement, etc. made within the spirit and principle of the present invention shall be included in the protection scope of the present invention.

[0056] The above are only the preferred embodiments of the present invention, and the protection scope of the present invention is not limited to the above embodiments. All technical solutions falling within the concept of the present invention belong to the protection scope of the present invention. It should be noted that for those of ordinary skill in the art, without departing from the principle of the present invention, several improvements and refinements should also be regarded as within the protection scope of the present invention.

Claims

1. A self-cleaning drill bit, comprising a pagoda drill body (1); characterized in that: A connecting shaft (2) is fixedly installed at the top of the tower drill body (1); a cage (3) is rotatably arranged on the circumferential side of the connecting shaft (2); It further includes a protection part (4) slidably matched with the cage (3); the protection part (4) includes a protection cylinder (5) and a storage box (6) which are communicated with each other; A fixing seat (7) is slidably arranged on the inner bottom surface of the storage box (6); a stepped guiding part (8) with the same structure as the tower drill body (1) is slidably arranged inside the fixing seat (7); conical spiral discharge grooves (9) and conical spiral guiding grooves (10) are respectively formed on the circumferential sides of the tower drill body (1) and the stepped guiding part (8); A lifting plate (11) is slidably arranged on the inner wall of the storage box (6); a first cleaning part (12) adapted to the conical spiral discharge groove (9) and the conical spiral guiding groove (10) is slidably arranged inside the lifting plate (11); a second cleaning part (13) adapted to the tower drill body (1) is slidably arranged through the inner wall of the protection cylinder (5).

2. The self-cleaning drill bit according to claim 1, characterized in that: An outer annular groove (14) is formed on the circumferential side of the connecting shaft (2); the cage (3) includes a retaining ring (15) rotatably matched with the outer annular groove (14); L-shaped plates (16) are symmetrically fixed on the circumferential side of the retaining ring (15); guiding sleeves (17) slidably matched with the corresponding L-shaped plates (16) are symmetrically fixed on the outer circumferential side of the protection cylinder (5); a support spring (18) is fixedly connected between the inner bottom surface of the guiding sleeve (17) and the bottom of the L-shaped plate (16).

3. The self-cleaning drill bit according to claim 2, characterized in that: A sleeve (19) inserted and matched with the connecting shaft (2) is fixed at the top of the tower drill body (1); a flange plate (20) is fixed on the circumferential side of the connecting shaft (2); the flange plate (20) is fixedly installed at the top of the sleeve (19) through fastening bolts; a hexagonal column (21) clamped and matched with the output end of an external electric drill is fixed at the top of the connecting shaft (2); a magnetic hexagonal sleeve adapted to the output end of the external electric drill and clamped and matched with the hexagonal column (21) is provided at the output end of the external electric drill; A collection box (22) is penetrated and communicated on the circumferential side of the protection cylinder (5) near its bottom; one end of the collection box (22) is open, and an inclined plate (23) is fixed on its inner bottom surface; a discharge pipe (24) is penetrated and communicated on the inner bottom surface of the collection box (22); a sealing cover is screwed at the bottom of the discharge pipe (24); the other end of the collection box (22) is communicated with a negative pressure pipe (25); a filter screen is arranged inside the negative pressure pipe (25).

4. The self-cleaning drill bit according to claim 3, characterized in that: A rotating shaft (26) is fixed at the bottom of the stepped guiding part (8); an annular rail (27) is fixed on the circumferential side of the rotating shaft (26); a shaft hole (28) rotatably matched with the rotating shaft (26) is formed inside the fixing seat (7); an inner annular groove (29) rotatably matched with the annular rail (27) is formed on the inner wall of the shaft hole (28); marking plates (58) are fixed on the circumferential sides of the connecting shaft (2) and the stepped guiding part (8).

5. The self-cleaning drill bit according to claim 4, characterized in that: Slide rails (30) are symmetrically fixed on both sides of the inner wall of the storage box (6); slide grooves (31) slidably matched with the corresponding slide rails (30) are symmetrically opened on the opposite sides of the fixed seat (7); an iron block (32) is fixed on the side of the fixed seat (7); a magnet (59) is fixed on the inner wall of the storage box (6); a plug hole (33) is opened on the inner wall of the slide groove (31); a plug rod (34) slidably matched with the plug hole (33) is symmetrically set through both sides of the inner wall of the storage box (6); a stopper (35) is fixed at the end of the plug rod (34); a return spring (36) sleeved on the corresponding plug rod (34) is fixedly connected between the stopper (35) and the side of the storage box (6).

6. The self-cleaning drill bit according to claim 5, characterized in that: The protective tube (5) is provided with a lifting groove (37) on the side surface thereof and connected to the storage box (6); the lifting groove (37) is provided with symmetrical limit grooves (38) on both sides of the inner wall; the lifting plate (11) is slidably engaged with the lifting groove (37); limit rails (39) slidably engaged with the limit grooves (38) are symmetrically fixed on two opposite sides of the lifting plate (11); a sliding hole (40) is provided on the side surface of the lifting plate (11); and a guide groove (41) is provided on the inner wall of the sliding hole (40).

7. The self-cleaning drill bit according to claim 6, characterized in that: The first cleaning portion (12) comprises a slide rod (42) slidably matched with the slide hole (40); a guide rail (43) slidably matched with the guide groove (41) is fixed to the side surface of the slide rod (42); a first ball head (44) matched with the conical spiral guide groove (10) is fixed to one end of the slide rod (42); a connecting spring (45) sleeved on the slide rod (42) is fixedly connected between the first ball head (44) and the side surface of the lifting plate (11); a second ball head (46) is fixed to the other end of the slide rod (42); a cleaning sleeve (47) is sleeved on the second ball head (46); and the cleaning sleeve (47) sleeved on the second ball head (46) is matched with the conical spiral discharge groove (9).

8. The self-cleaning drill bit according to claim 7, characterized in that: A U-shaped seat (48) is fixed on the side surface of the protective tube (5); guide holes (49) are symmetrically opened on the side surface of the protective tube (5) on both sides of the U-shaped seat (48); the second cleaning part (13) includes a stepped plate (50) adapted to the pagoda drill body (1); a stepped cleaning sponge block (51) is bonded to the side surface of the stepped plate (50); a U-shaped plate (52) slidingly matched with the two guide holes (49) is fixed on the side surface of the stepped plate (50); a screw hole (53) is opened on the side surface of the U-shaped plate (52); a screw rod (54) rotatably matched with the threaded screw hole (53) is rotatably set on the side surface of the U-shaped seat (48); an extension plate (55) is fixed on the top of the stepped plate (50); a positioning rod (56) is symmetrically fixed to the extension plate (55); a positioning hole (57) plug-matched with the positioning rod (56) is opened on the side surface of the L-shaped plate (16).

9. The method of using the self-cleaning drill bit according to claim 8, characterized in that, The following steps are involved: T1, in the initial state, the positioning rod (56) is separated from the positioning hole (57), and the stepped cleaning sponge block (51) is separated from the outer wall of the pagoda drill body (1); the insertion rod (34) is separated from the insertion hole (33), and the magnet (59) attracts the iron block (32), so that the fixed seat (7) drives the stepped guide part (8) to slide in a direction away from the pagoda drill body (1), and under the elastic reset force of the connecting spring (45), the sliding rod (42) is driven to slide in a direction away from the pagoda drill body (1), so that the cleaning sleeve (47) is separated from the conical spiral discharge groove (9); the support spring (18) is in a normal state, and the pagoda drill body (1) is stored in the protective tube (5); T2, in the drilling state, by inserting the magnetic hexagonal sleeve at the output end of the external electric drill into the hexagonal column (21), placing the protective tube (5) flat on the surface of the plate to be drilled, and controlling the external electric drill to drive the connecting shaft (2) and the pagoda drill body (1) to rotate synchronously. At the same time, the connecting shaft (2) is pressed downward, so that the pagoda drill body (1) rotates and descends, and the support spring (18) is compressed to complete the drilling. During the drilling process, the external exhaust fan is started to extract the air inside the collection box (22) to form a negative pressure, thereby sucking the debris generated during the drilling process into the collection box (22); T3. After the drilling is completed, the pagoda drill body (1) is stored in the protective tube (5) to complete the reset, and the fixed seat (7) is pushed to drive the cleaning sleeve (47) at the end of its first cleaning part (12) to be inserted into the conical spiral discharge groove (9), and then the fixed seat (7) is fixed; the screw (54) is rotated to drive the stepped cleaning sponge block (51) on the second cleaning part (13) to slide against the outer peripheral side of the pagoda drill body (1). At this time, the positioning rod (56) is inserted into the positioning hole (57), completing the preparation work before cleaning; T4. Control the external electric drill to drive the pagoda drill body (1) to slowly rotate forward and backward, and the dust and debris on the side surface of the pagoda drill body (1) are cleaned away by the stepped cleaning sponge block (51). At the same time, the first cleaning part (12) is guided by the conical spiral discharge groove (9) and the conical spiral guide groove (10), so that the first cleaning part (12) performs a reciprocating lifting motion, so that the cleaning sleeve (47) cleans the dust and debris inside the conical spiral discharge groove (9).

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